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  1. MariaDB Server
  2. MDEV-34312

Handle range scan SEL_ARG overallocation gracefully.

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    Description

      The optimizer can perform a range scan and build a SEL_TREE.

      When attempting to allocate more than optimizer_max_sel_args (thd->variables.optimizer_max_sel_args), Item_cond::get_mm_tree() will abort all range scans and potentially revert to a full table scan.

      This issue is created to explore more useful alternatives to this.

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          relates to

          Bug - A problem which impairs or prevents the functions of the product. MDEV-34620 Large N-way OR causes a lot of index_merge variants to be created and discarded

          • Critical - Crashes, loss of data, severe memory leak.
          • Stalled

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              Johnston Rex Johnston
              Johnston Rex Johnston
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                Updated:

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